Trinkets and toys lovingly handmade by maximum security prisoners.

Oldest building in California still in use.

See massive fossils that are over 200 million years old in northeastern Arizona.

The 32nd president's sprawling cottage sits on an island enclave jointly managed by the U.S. and Canada.

A quarter mile off the coastal tip of Maine you'll find the "Beloved Island" of Franklin Delano Roosevelt.

A white oak with property rights.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

Pluto is still considered a planet in Ithaca, New York.

The largest earthwork effigy in the world.

One of the few surviving "Wigwam"-themed motels.

The world's longest known cave system.

New Hampshire's first neighborhood is now preserved as a historic village with live action role players.

3,200-square-foot mural inside Dartmouth Library depicts the history of America with images of human sacrifice, ancient gods, and other unspeakable terrors.

A beautiful Gilded Age hotel in the White Mountains with surprising diplomatic history.

Stumps of an Ice Age forest, visible only at low tide.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

This striking art museum holds an amazing series of curiosity cabinets.

A place to eat for on-the-run agents and espionage enthusiasts.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

"The Most Boring Road in the State."

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

A tiny piece of the Moon is embedded in this stained glass masterpiece.